13790321 has 2 divisors, whose sum is σ = 13790322. Its totient is φ = 13790320.

The previous prime is 13790311. The next prime is 13790347. The reversal of 13790321 is 12309731.

13790321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (13790347) can be obtained adding 13790321 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 4669921 = 3020^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 13790321 - 2¹⁴ = 13773937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13790311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6895160 + 6895161.

It is an arithmetic number, because the mean of its divisors is an integer number (6895161).

Almost surely, 2^13790321 is an apocalyptic number.

It is an amenable number.

13790321 is a deficient number, since it is larger than the sum of its proper divisors (1).

13790321 is an equidigital number, since it uses as much as digits as its factorization.

13790321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13790321 is about 3713.5321460841. The cubic root of 13790321 is about 239.8049398874.

The spelling of 13790321 in words is "thirteen million, seven hundred ninety thousand, three hundred twenty-one".